An official says Ugandan President Yoweri Museveni is in South Sudan to advance regional efforts to find a political solution to the country's crisis, according to AP. Fred Opolot, a spokesman for Uganda's Foreign Ministry, said Monday that Museveni visited South Sudan "in the spirit" of diplomatic efforts by East African leaders who want President Salva Kiir and his rivals to start peace talks by Tuesday. Museveni has deployed troops to Juba, the South Sudan capital. Ugandan military spokesman Lt. Col. Paddy Ankunda said Ugandan forces were stationed at the airport and their role is to "facilitate evacuation" of civilians. Up to 180,000 people have been displaced by violence since Dec. 15, according to the U.N.